Improvement in the manufacture of artificial stone



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COATING OR PLASTIC FY; suesrnurio FOR Missmo 00 UNITED STATES PATENT OFFICE.

JESSE W. SNYDER, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO THOS. H. MARTIN, OF SAME PLACE.

IMPROVEMENT IN THE MANUFACTURE OF ARTIFICIAL STONE.

Specification forming part of Letters Patent No. 129,689, dated July 2 3, 1872.

barrel' two 2) barrels an o m e si' two pounds, and thoroiighly IIlIX tllem ogether. Then to a quantity of the sand and cement I add sufficient of the fluid mixture to moisten the mass, which I tamp into the molds, which give it the desired f The mass should remain twenty-four our-s 1n the molds to dr and set; then remove them and pour over emolded blocks as much of the above solution as they will absorb, and repeat it daily Ior five days, when they are ready for use.

The artificial stone made by this process is insoluble in water; on the contrary it hardcns when immersed in water or when exposed to the weather.

What I claim as my invention, and desire to secure by Letters Patent, is-

Artificial stone composed of the materials and in the proportions substantially as herein set forth.

JESSE IV. SNYDER.

Witnesses:

WM. H. Lorz, GEO. FERRIS.

Examiner 

